Improvement in stop-motions of looms



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N.PETERS, PHOTO-LITHOGRAPHER. WASHINGTON D 4 line Fig. 1.

I face of the shipper.

PATENT OFFICE.

ADAM MARGHINGTON, AOF UPLAND, PENNSYLVANIA.'

IMPROVEMENT IN STOP-MOTIONS OF LOOMS.

Specification forming part of Letters Patent No. 57,350, dated August21, 1866.

To all 'whom it may concern:-

Be it known that I, ADAM MARcHrNG'roN, of Upland, in the county ofDelaware and State of Pennsylvania, have invented a new and usefulImprovement in Power-Looms; and I do hereby declare that the followingis a full, clear, and exact description thereof, which will enableothers skilled in the art to make and use the same, reference being hadto the accompanying drawings, forming part of this specification, inwhich- Figure 1 is a back elevation of a loom to which my improvementhas been applied. Fig. 2 is a cross-section in the plane of the Fig. 3is a plan of a portion of the loom.

Similar letters of reference indicate like parts.

The object of this invention is to stop the loom when the weft is brokenor runs out; and it consists in a novel arrangement of devices forunlocking the shipper and moving the belt onto the loose pulley to stopthe loom. The lower shaft has an arm or wiper on it near oneend,which,under certain circumstances, strikes the rear end of a leverwhich is pivoted to a sliding bar that is mounted on pins or guides onthe. inside of one end ofthe loom-frame, the forward end of the bar,when it is pushed forward, coming against the lower end of a verticallever whose upper end strikes a horizontal lever that rests alwaysagainst the front The leverwhieh is struck by the wiper is held] up outof its way so long as the weft is unbroken, but when it is broken thelever is allowed to drop in the way of the wiper, when the shipper willbe moved so as to bring the belt onto the loose pulley.

The letterAdesignates the frame of a powerloom. B is the driving-shaftwhich drives the lower shaft, B', by suitable gearing Q Q.- The lowershaft has a wiper, K, on it near the inside of that end of the framewhere the shipper is placed.

J is a sliding bar, which is supported at its ends by screw-pins S S,one of which is secured to the inside of one of the front posts of theloom-frame and the other to the top of a standard, I, which is fastenedto the lower end rail. The standard I has an elongated slot in thedirection of its length, by means of which it can be adjusted on therail, and the Guides can be substituted for holding the bar,

if preferred.

At a suitable point on the inside of bar I s pivoted a drop-lever, F, onwhose rear end is placed a broad right-angled plate, the lower end ofwhich is made square, so as to present a suitable surface to be acted onby the wiper K, as hereinafter mentioned. The other end of the drop-lever is weighted so as nearly to balance the rear end, its weight-Tbeing adjustable in a-n elongated slot made in the lever.

The upper edge of the vertical end 0f the lever F is connected by a cordto the horizontal arm of an elbow-lever, G, whose other arm is verticaland is connected by a joint to the rear end, L', of the weft-fork. Theaxis of the elbow -lever G has its bearings in the lugs which rise fromthe top of a bracket, H, that extends from the adjacentpost of theheddleframe O.

The weft-fork L may be made in any convenient way, and in this exampleit has afork of three tines, whose backs are bent upward, as seen inFig. 2, the middle tine being continued toward the rear to form the partL', which is connected to elbow-lever Gr, and that by cord to lever F,and also toward thefront, where it is formed into a flat loop, L2, whichslides on the top of the breast-beam beneath a plate, U, whosecontining-screwis embraced by the loop, and consequently limits themovement of the weft-fork both in a forward and a backward direction.The ends of the two lateral tines are brought into a horizontal line soas to allow end of lever F, but with so light a pull as to be stopped bythe weft-thread, whose tension is supposed to be always sutlicient toprevent thefork from going through the bars of the cage, and alsosufficient to allow the loop L2 to slide forward when the lay beats up,thereby also causing the vertical part of lever F to be raised out ofthe way of the wiper K of the cani-shaft B. When, however, theweft-thread is broken, the bars of the Cage are allowed to pass the forkand the lever F remains in a position so low that its vertical end isstruck by the wiper, which pushes it, with the bar J, forward until theshoulder R of th e bar strikes the lower end of lever M, whose upper endstrikes the forward edge of e horizontal lever, N, which is pivoted tothe under side of the breast-beam, als shown in Fig. 2 and partly indotted outline in Fig. l, and by pushing that lever backward unlocks theshipper E from the forward port-ion of the right-angled slot, into whichit is sprung` when the belt is moved onto the fast pulley, therebyallowing the elasticity ot' the shipper to move the belt onto the loosepulley and so letting lthe loom stop.

ADAM MARCHINGTON.

Witnesses JosEPH HOLT, J AMES BUCKLEY.

